JPH036708Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is suitable for constructing underground pipes for fluids such as gas pipes and water pipes, or pipes for accommodating power lines, optical or electric signal lines, etc. The present invention relates to a device for excavating a relatively small-diameter horizontal hole, such as a horizontal hole for discharging water or a horizontal hole for discharging water, and particularly relates to the arrangement structure of its operating device, etc.

(Prior Art) The inventors of the present invention have already developed a device for excavating horizontal holes for underground piping (including inclined holes) by remote control. This device fits a casing into a vertical hole drilled to the depth of the existing pipe or to a predetermined depth, and attaches a screw auger, etc. to an elevating frame that lifts and lowers the inside of the casing using a lifting device such as a winch. It is equipped with a rotation drive device for the excavation tool, a traversing device that reciprocates the rotation drive device, and a chuck device that rotates and fixes the excavation tool, which is attached to the rotation drive device and the front end of the lifting frame, respectively. With the frame pulled up, attach the digging tool to the rotary chuck device,
The elevating frame is lowered to the bottom of the vertical hole, the excavating tool is rotated and moved forward to dig into the ground through the opening at the bottom of the casing, the excavating tool is separated from the rotary chuck device, and the elevating device This process is repeated by pulling up the elevating frame, attaching a new excavating tool to the rotary chuck device, lowering the elevating frame again, adding the following digging tool to the preceding one, and digging.

However, this horizontal hole excavation equipment uses a hydraulic actuator as each drive device of the rotational drive device of the excavation tool, the traverse device, and the chuck device of the excavation tool, uses a hydraulic pump mounted on the excavation work vehicle as the drive source, and Because excavation is performed by operating control levers and switches in the control room mounted on the excavation work vehicle, the number of hydraulic hoses and cables connected from the control room to each drive device in the casing increases. There was a problem that these judgments were complicated. In addition, when performing horizontal hole drilling work, a total of two people are always required: an operator in the operation room of the work vehicle, and a worker who is responsible for attaching and removing the excavating tools, and looking into the inside of the vertical hole and instructing the operator to operate. There is a problem with that.

Therefore, we developed a system in which a hydraulic unit housing a switching valve, etc. is installed on the casing, and an operation panel is installed integrally on top of the hydraulic unit.
Since space is required at the front of the casing in the direction of excavation to attach and detach the excavator, the hydraulic unit and the operation panel must be installed at the rear in the direction of excavation.
However, the work place for attaching and detaching the drilling tool on the casing is different from the work place for operating the operation switches for controlling the operation of the side hole drilling equipment. There is a problem in that work efficiency is poor as the user has to crawl around frequently.

(Problems to be Solved by the Invention) In view of the above-mentioned problems, the present invention has a structure that simplifies the handling of the hydraulic hoses or cables, etc., and allows one person to efficiently perform horizontal hole excavation work. The purpose is to provide horizontal hole drilling equipment.

(Means for solving the problem) In order to achieve this objective, the horizontal hole drilling device of the present invention includes a rotary drive device for the drilling tool and a rotary drive device for the rotary drive device in a casing that is pushed into a vertical hole excavated from the ground. An elevating frame equipped with a traversing device and a chuck device for excavating tools is mounted so as to be freely raised and lowered via guide means, and the elevating device of the elevating frame is installed on the upper part of the casing, and each of the elevating frames mounted on the elevating frame An operating device for the drive device of the device is installed diagonally forward or to the side of the upper part of the casing in the excavation direction, and a hydraulic unit for each of the drive devices is installed behind the upper part of the casing in the excavation direction, When connecting hydraulic hoses and cables from a hydraulic power source or power source installed on the work vehicle to the hydraulic unit, the number of these hoses is reduced or eliminated, and the operating device is separated from the hydraulic unit. , installed on the casing as a small device, does not interfere with the attachment and detachment of drilling tools, and the operator can perform all the work for horizontal hole excavation by himself, sitting in a chair installed at the front in the direction of excavation. Ru.

(Example) The details of the present invention will be explained below with reference to FIGS. 1 to 5, taking as an example horizontal hole excavation for constructing a new gas pipe. Fig. 1 shows a state in which a lateral hole is being excavated using the lateral hole drilling equipment of the present invention, Figs. It shows the configuration of the main parts of the drilling rig. In Fig. 1, A is an existing gas pipe buried underground under a road, B is a vertical hole excavated to a depth from the ground to the existing gas pipe A,
1a and 1b are casings pushed into the vertical hole B, and depending on the depth of the vertical hole B, one or more casings of appropriate length are combined. Reference numeral 2 denotes an elevating frame consisting of a gate-shaped support frame 3 and a guide frame 4 attached to the support frame 3. As shown in FIG.
The upper and lower parts of casings 1a and 3b are provided with casings 1a and 1.
A guide roller 6 that rolls along a guide rail 5 that is vertically fixed to an opposing position on the inner wall of b.
The guide frame 4, on which a rotary drive device 7 for an excavation tool 25 such as a screw auger is movably mounted on the support frame 3, is perpendicular to the direction in which the guide frames 5, 5 face each other. In other words, it is mounted substantially horizontally toward the excavator insertion opening 9, which is a vertically long notch provided in the lower part of the casing 1a. In addition, in order to excavate an inclined horizontal hole, the guide frame 4 is pinned to the support frame 3 so as to be tiltable.
The guide frame 4 may be fixed to the support frame 3 so as not to tilt at a desired inclination angle with a tightening screw, or the support frame 3 and the guide frame 4 may be connected by an inclination angle adjusting device such as a turnbuckle.

A pair of guide rails 10, 10 are fixed to the guide frame 4 in its longitudinal direction, and grooves provided on the outer periphery of guide rollers 11 attached to the four corners of the lower surface of the rotary drive device 7 are formed in the guide rails 10. By fitting, the rotary drive device 7 is positioned and movable by the guide rail 10.

On the guide frame 4 is the rotary drive device 7.
A traversing hydraulic motor 12 is installed to traverse the traverse, and a chain 66 is connected to the sprocket 13 rotated by the hydraulic motor 12 and the sprockets 64 and 65 attached near both ends of the guide frame 4. By connecting the hydraulic motor 12 to the connecting portion 67 provided on the side of the guide rail 7 and rotating the hydraulic motor 12 in forward and reverse directions, the rotary drive device 7 can rotate the guide rail 1.
It moves forward and backward along 0.

The rotation drive device 7 includes a hydraulic motor 7 for rotating an excavator.
A and a rotary chuck device 7b, and a built-in mechanism (not shown) for operating the rotary chuck device 7b. The details of the rotary chuck device 7b are not shown in the figure, but like a rotary chuck device used for gripping a rod-shaped workpiece in a machine tool, for example, the rotary chuck device 7b has a radial shape on a rotating body rotated by the hydraulic motor 7a. A chuck pawl is slidably fitted into a plurality of wide-bottomed grooves formed in the grooves, and the pawls are moved in the radial direction by a hydraulic cylinder (not shown) to grip the grip portion 25a of the excavating tool 25. Those that perform release are used.

A fixed chuck device 14 for adding an excavator is attached to the end of the guide frame 4. The fixed chuck device 14 includes a pair of left and right hydraulic cylinders 30, 31 each having a tube pinned to the guide frame 4, and is rotatably attached to the guide frame 4 about pins 17, 18, respectively. Links 21 and 22 are connected to the piston rods of hydraulic cylinders 30 and 31 by pins 19 and 20, and the other ends of the links 21 and 22 are engaged with pins 23 and 24, respectively, and a grip for an excavation tool 25 is attached to the tip. a claw 26 that grips the portion 25a;
The grip part 25a can be gripped or released by extending and contracting hydraulic cylinders 30 and 31. 32 is an auger guide attached to the opening 9 to prevent the entrance of the side hole from collapsing.

In FIGS. 1 to 4, 33 is a frame on which is mounted a winch 34 for lifting and lowering the lifting frame 2, an operating device 35, and a hydraulic unit 53, and the frame 33 has a circular flange portion 33a provided at its lower part. is placed on the upper side of the casing 1b, and the cylindrical lower part 33b is placed on the casing 1b.
It is attached by fitting into the upper side surface of the casing 1b and fixing it to the upper part of the casing 1b with screws 50. A casing 1 is disposed on the left and right sides of the frame 33.
Guide rail 5A continuous with guide rail 5 of b
A support frame 33d on which the winch 34 is placed is installed between the upper ends of the vertical frame 33c. The winch 34 is a hydraulic motor 34
a and two winding drums 34 coaxially arranged.
b, and the wire rope 51 to be wound up and let out on these winding drums 34b is connected to a sheave 52 attached to the center of the upper frame 3c of the support frame 3.
The lifting frame 2 is configured to move up and down by rotating the hydraulic motor 34a in forward and reverse directions.

The operating device 35 has an operating panel 57 attached to a telescoping pole 55 made of a U-shaped beam fixed diagonally forward or sideways in the excavation direction on the flange 33a so as to be tiltable at any angle with a set screw 56. An operating lever 37 for controlling the rotational direction and speed of the horizontal hole hydraulic motor 12 is attached to the upper part of the horizontal hole hydraulic motor 12. The operation panel 57 includes a switch for turning the operating power on and off, a push button switch for operating the hydraulic cylinders 30 and 31 of the fixed chuck device to open and close the claws 26 and 27, and a push button switch for operating the excavating tool 25 by the hydraulic motor 7a. A push button switch that commands left rotation, right rotation, and stop, respectively, a push button switch that opens and closes the rotary chuck device 7b, and a push button switch that causes the winch 34 to wind up, lower, and stop, respectively.
and display lamps etc.

The hydraulic unit 53 is connected to each hydraulic motor 7.
a, 12, 34a and hydraulic cylinders 30, 3
1. A switching valve for a hydraulic cylinder (not shown) of the rotary chuck device 7b is housed in a box. A control panel 54 is mounted on the upper part of the hydraulic unit 53, and the control panel 54 houses electric circuits and equipment that relay the switches on the operation panel 57 and the hydraulic equipment in the hydraulic unit 53. In addition, a hydraulic gauge that displays the hydraulic pressure of the hydraulic oil to the traversing hydraulic motor 12, a hydraulic gauge that displays the hydraulic oil pressure of the hydraulic oil to the traversing hydraulic motor 7a, and a variable gauge that adjusts the flow rate of the hydraulic oil to the hydraulic motor 12. Knobs, etc. are attached.

As shown in FIG. 1, the hydraulic unit 53 is connected to hydraulic hoses 43, 44 and a cable 4, each of which has one end connected to a hydraulic pump, an oil tank, and a power source mounted on a work vehicle (not shown).
The other ends of the hydraulic hoses 43 and 44 are connected to each other.
In the hydraulic unit 53, the hydraulic hose group 47 is composed of pairs of hydraulic hoses that branch to hydraulic equipment such as valves operated by the push button switches, etc., and forms each branch flow path. Hydraulic cylinder 3 of the drive, i.e. fixed chuck device 14
0 and 31 are connected to the drive device of the rotary chuck device 7b and the hydraulic motors 7a and 12. In addition,
In this embodiment, as shown in FIG. 1, an L-shaped frame 48 is provided on the upper frame 3c of the support frame 3 so that the slack of the hydraulic hose group 47 as the elevating frame 2 moves up and down is reduced. When the lifting frame 2 is at the lowest position as shown in FIG. There is almost no slack in this part, and when the lifting frame 2 rises, there is some slack, but this does not interfere with the lifting of the lifting frame 2, and when the upper part of the support frame 3 reaches the upper part of the casing 1b. , roller 49
protrudes above the frame 33 through an opening 33e at the top of the frame 33, and is configured to push up the hydraulic hose group 47 and take up the slack thereof.

In addition, the front surface of the frame 33 is opened, and the height of the frame 33 from the upper side of the casing 1b is
As shown by 2' in FIG. 1, the height is such that when the lifting frame 2 is pulled up to the top, the rotary chuck device 7b is located above the casing 1b, thereby making it easy to attach and detach the excavating tool 25. We make it easy to do.

When digging a side hole using this device, the first
As shown in the figure, a worker 60 is sitting on a chair 59 placed in front of the casing 1b in the excavation direction, with the lifting frame 2 pulled up as shown by 2', and with the rotary drive device 7 in the retracted position. Then, use the most advanced digging tool 25' (with a sharp tip).
The rotary chuck device 7b is mounted on a mounting base 58 having a positioning function for the rotary chuck device 7b.
After the winch 34 is attached to the support frame 3, the winch 34 is operated in the lowering direction by pressing the winch lowering operation push button switch on the operation panel 57, and the winch 34 is attached to the support frame 3 by a stopper (not shown) attached to the lower part of the guide frame 5. The elevating frame 2 is lowered until a locking piece (not shown) abuts and locks. Next, operate the operating lever 37 in the direction of arrow a in FIG. A horizontal hole is excavated by operating the motor 7a in the excavation direction (clockwise rotation). After advancing the rotary drive device 7 to the frontmost position, press the corresponding push button switch on the operation panel 57 to open the rotary chuck device 7b and release the digging tool 25'.
By operating the operating lever 37 in the direction b in FIG.
(having a male thread at the tip that screws into the female thread at the tail end of the excavating tool 25') is attached to the rotary chuck device 7b.
The lifting frame 2 is lowered again, the gripping part 25a of the tip of the digging tool 25' is gripped by the fixed chuck device 14, and the rotary drive device 7 is advanced and operated in the digging direction to start digging. The male thread at the tip of the tool 25 is screwed into the female thread at the tail end of the digging tool 25'. Then, excavation is continued in the same manner as above. Incidentally, after excavation is performed using the excavating tool 25' at the tip, the auger guide 32 is attached to the opening 9 of the casing 1a, but the explanation thereof will be omitted. After the horizontal hole is excavated to the destination or a predetermined depth, the excavating tools 25 are sequentially pulled out in the reverse order as described above.

In the above embodiment, the hydraulic power source and power source were explained as being located in the work vehicle, but the hydraulic power source and power source were
It may be installed on the ground near the casing 1b, or a configuration in which a hydraulic source or power source is mounted on the hydraulic unit 53 or the like may also be adopted. Also,
As the elevating device for the elevating frame 2, not only a winch but also other elevating means such as a hydraulic cylinder can be used. The above embodiment has been explained by taking the installation of a new gas pipe as an example, but the present invention is applicable to the installation of a new pipe for other fluids, or the installation of a new pipe to an existing pipe.
Furthermore, it is also used for burying pipes to accommodate various cables and signal lines, and even for excavating holes for draining underground water.

(Effects of the invention) In the present invention, the operating devices for each device for horizontal hole excavation are separated from the hydraulic unit and installed diagonally forward or to the side in the excavation direction at the top of the casing. Since the number of hydraulic hoses or cables can be reduced or eliminated compared to the case where the operating device is installed above, the hoses can be easily handled and traffic hindrances can be reduced. In addition, the operating device is installed in a position where it can be operated independently from the front in the direction of the drilling tool, so operations for adding the drilling tool and drilling a side hole can be performed without having to crawl around the casing. Therefore, horizontal hole excavation work can be carried out efficiently by one worker.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view showing one embodiment of the horizontal hole drilling device of the present invention in a working state, Fig. 2 is an upper side view thereof, Fig. 3 is a front view of Fig. 2, and Fig. 4 is the embodiment of the horizontal hole drilling device. An example plan view, FIG. 5, is a cross-sectional view of the lower part of the horizontal hole drilling apparatus shown in FIG.

Claims (1)

[Scope of utility model registration request] An elevating frame equipped with a rotation drive device for an excavation tool, a traverse device for the rotation drive device, and a chuck device for the excavation tool is installed in a casing that is pushed into a vertical hole excavated from the ground so that it can be raised and lowered via a guide means. a lifting device for the lifting frame is installed on the upper part of the casing, and an operating device for the driving device of each device mounted on the lifting frame is installed diagonally forward or to the side of the excavation direction in the upper part of the casing; A horizontal hole drilling device characterized in that a hydraulic unit for each of the drive devices is installed at the rear of the upper part of the casing in the excavation direction.